K.C.S.E Physics Q & A - MODEL 1998PP1QN23
Cleavage in crystals is possible in certain directions only. Explain this observation.
answer
0 Comments
K.C.S.E Physics Q & A - MODEL 1998PP1QN21
In the circuit in fig 5 when the switch S is closed, the voltmeter shows a reading.
When the cell terminals are reversed and the switch is closed, the voltmeter reading is zero. Explain these observations.
ANSWER
K.C.S.E Physics Q & A - MODEL 1998PP1QN20
Table 1 carries information on the type of radiation, detector and use for some of the electromagnetic radiations. Fill in the blanks.
answers
K.C.S.E Physics Q & A - MODEL 1998PP1QN19
State two differences between the cathode ray tube (CRT) of a TV and the cathode ray oscilloscope (CRO)
answers
K.C.S.E Physics Q & A - MODEL 1998PP1QN18
State the reason why the amplitude of a simple pendulum decreases with time.
answer
K.C.S.E Physics Q & A - MODEL 1998PP1QN17
Calculate the length of a wire required to make a resistor of 0.5 ohms, if the receptivity of the material is 4.9 x 10-7 ohmmeter and the cross sectional area is 2.0 x 10-6cm-2
K.C.S.E Physics Q & A - MODEL 1998PP1QN16
In figure 4 one end of a metal rod is placed in steam and the other end in melting ice. The length of the rod in between in lagged.
State two factors that determine the rate at which ice melts.
ANSWER
K.C.S.E Physics Q & A - MODEL 1998PP1QN15
A highly negatively charged rod is gradually brought close to the cap of a positively charged electroscope. It is observed that the leaf collapses initially and then diverges. Explain the observation.
ANSWERS
K.C.S.E Physics Q & A - MODEL 1998PP1QN14
Explain how hammering demagnetizes a magnet
ANSWERS
K.C.S.E Physics Q & A - MODEL 1998PP1QN13
State the reason why a voltmeter of high resistance is more accurate in measuring potential differences, that one of low resistance.
ANSWERS
K.C.S.E Physics Q & A - MODEL 1998PP1QN12
The activity of a radioactive substance, initially at 400 counts per second reduces to 50 counts per second in 72 minutes. Determine the half – life of the substance.
K.C.S.E Physics Q & A - MODEL 1998PP1QN11
The internal resistance of the cell. E in figure 3 is 0.5 ohms.
Determine the ammeter reading when the switch S is closed.
K.C.S.E Physics Q & A - MODEL 1998PP1QN10
A car battery requires topping lip with distilled water occasionally. Explain why this is necessary and why distilled water is used.
ANSWERS
K.C.S.E Physics Q & A - MODEL 1998PP1QN09
Water of mass 3kg at a temperature of 90°C is allowed to cool for 10 minutes.
State tow factors other than humidity. that determine the final temperature.
ANSWER
K.C.S.E Physics Q & A - MODEL 1998PP1QN08
The primary coils of a transformer has 2000 turns and carries a current of 3A. If the secondary coil is designed to carry a current of 30A, calculate the maximum number of turns in the secondary coil.
K.C.S.E Physics Q & A - MODEL 1998PP1QN07
State one advantage of fitting wide tyres on a vehicle that moves on earth roads.
ANSWERS
K.C.S.E Physics Q & A - MODEL 1998PP1QN06
Figure 2 draw to scale shows a lens L1 placed 30cm fro an object O. The image is formed on the screen S 50cm from the lens.
K.C.S.E Physics Q & A - MODEL 1998PP1QN05
A metal pin was observed to float on the surface of pure water. However the pin sank when a few drops of soap solution were carefully added to the water. Explain his observation.
ANSWER
​K.C.S.E Physics Q & A - MODEL 1998PP1QN04
State one industrial use of X – rays
ANSWER
​K.C.S.E Physics Q & A - MODEL 1998PP1QN03
A heating coil rated 1000 W takes 15 minutes to heat 20kg of a liquid from 26°C of 42°C. Determine the specific heat capacity of the liquid.K.C.S.E Physics Q & A - MODEL 1998PP1QN01
Figure 1 shows a fencing post whose length is being measured using a strip of a measuring tape.
Use this information to answer questions 1 and 2.
State the accuracy of the tape: What is the length of the post K.C.S.E Physics Q & A - MODEL 1997PP1QN34
A lithium atom has 3 protons in its nucleus. Complete the diagram in figure 14 by marking X in the appropriate shells show the electron distribution when the atom is not excited
In a sample there are 5.12 x 1020 atoms of krypton – 92 initially. If the half of krypton; 92 is 3.0s determine the number of atoms that will have decayed after 6s.
K.C.S.E Physics Q & A - MODEL 1997PP1QN33
State how eddy currents are reduced in a transformer
ANSWERS
K.C.S.E Physics Q & A - MODEL 1997PP1QN32
Using the components symbols shown in figure 14, sketch a series circuit diagram for a forward biased diode
K.C.S.E Physics Q & A - MODEL 1997PP1QN31
Two turning forks are sounded together. What is the condition for the beats to be heard?
ANSWER
|
CATEGORIES
Categories
All
Topics
FORM I - PHYSICS SYLLABUSFORM II - PHYSICS SYLLABUSTOPICS
FORM III - PHYSICS SYLLABUSFORM IV - PHYSICS SYLLABUSARCHIVES
RSS FEEDS
AUTHOR
M.A NyamotiMy passion is to see students pass using right methods and locally available resources. My emphasis is STEM courses
|
We Would Love to Have You Visit Soon! |
Hours24 HR Service
|
Telephone0728 450425
|
|
8-4-4 materialsLevels
Subjects
|
cbc materialsE.C.D.E
Lower Primary
Upper Primary
Lower Secondary
Upper Secondary
|
teacher support
Other Blogs
|